Table 2.
Pentacam corneal topography indices changes after single-segment Intacs implantation.
| Parameter | Preoperative |
4 months postoperatively |
Changes |
P |
|---|---|---|---|---|
| Mean ± SD | Mean ± SD | Mean ± SD | ||
| ISV | 96.76 ± 30.22 | 72.88 ± 21.28 | 23.88 ± 16.47 | <0.001 |
| IVA (mm) | 1.133 ± 0.42 | 0.74 ± 0.32 | 0.38 ± 0.25 | <0.001 |
| KI | 1.27 ± 0.11 | 1.13 ± 0.09 | 0.14 ± 0.09 | <0.001 |
| CKI | 1.06 ± 0.05 | 1.08 ± 0.04 | −0.02 ± 0.02 | <0.001 |
| IHA (μm) | 34.24 ± 23.58 | 27.97 ± 21.93 | 6.26 ± 19.71 | 0.046 |
| IHD (μm) | 0.16 ± 0.11 | 0.08 ± 0.05 | 0.08 ± 0.11 | <0.001 |
| R min.(mm) | 6.09 ± 0.54 | 6.39 ± 0.53 | −0.3 ± 0.3 | <0.001 |
ISV: Index of surface variance, IVA: Index of vertical asymmetry, KI: Keratoconus index, CKI: Central keratoconus index, IHA: Index of height asymmetry, IHD: Index of height decentration, R Min: Minimum radius of curvature, SD: Standard deviation.